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<!DOCTYPE html>
<html>
<body>
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<h1>The xor Operator</h1>
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<p>Write a message if one of the conditions are true, bot not if both conditions are true.</p>
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<?php
$x = 100;  
$y = 50;
​
if ($x == 100 xor $y == 80) {
    echo "Hello world!";
}
?>  
​
</body>
</html>
​

The xor Operator

Write a message if one of the conditions are true, bot not if both conditions are true.

Hello world!